Annual report pursuant to Section 13 and 15(d)

Additional Financial Statement Information - Other Balance Sheet information (Details)

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Additional Financial Statement Information - Other Balance Sheet information (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Other Receivables    
Insurance and Third Party Receivables for Remediation Expenses $ 3,600 $ 3,099
Reimbursable Projects and Other 754 1,027
Total Other Receivables 4,354 4,126
Prepaids and Deposits    
Prepaid Insurance and Other 5,744 5,953
Deposits 61 90
Total Prepaids and Deposits 5,805 6,043
Accrued and Other Current Liabilities    
Accrued Operating Expense 28,877 17,774
Accrued Capital Costs 16,161 4,603
Accrued Interest 8,262 7,625
Accrued Compensation 4,809 4,551
Dividends and Distributions Payable 52 3,847
Lease Liabilities $ 1,176  
Current Lease Liabilities, Classification Total Accrued and Other Current Liabilities  
Asset Retirement Obligation $ 2,242  
Other 3,832 2,064
Total Accrued and Other Current Liabilities 65,411 40,464
Other Long-Term Liabilities    
Noncurrent Lease Liabilities 7,719  
Contingent Consideration Liability 2,702  
Other   1,336
Total Other Long-Term Liabilities $ 10,421 $ 1,336